lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm.h

//===-- NativeRegisterContextLinux_arm.h ---------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)

#ifndef lldb_NativeRegisterContextLinux_arm_h
#define lldb_NativeRegisterContextLinux_arm_h

#include "Plugins/Process/Linux/NativeRegisterContextLinux.h"
#include "Plugins/Process/Utility/NativeRegisterContextDBReg_arm.h"
#include "Plugins/Process/Utility/RegisterInfoPOSIX_arm.h"
#include "Plugins/Process/Utility/lldb-arm-register-enums.h"

namespace lldb_private {
namespace process_linux {

class NativeProcessLinux;

class NativeRegisterContextLinux_arm : public NativeRegisterContextLinux,
                                       public NativeRegisterContextDBReg_arm {
public:
  NativeRegisterContextLinux_arm(const ArchSpec &target_arch,
                                 NativeThreadProtocol &native_thread);

  uint32_t GetRegisterSetCount() const override;

  const RegisterSet *GetRegisterSet(uint32_t set_index) const override;

  uint32_t GetUserRegisterCount() const override;

  Status ReadRegister(const RegisterInfo *reg_info,
                      RegisterValue &reg_value) override;

  Status WriteRegister(const RegisterInfo *reg_info,
                       const RegisterValue &reg_value) override;

  Status ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override;

  Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;

protected:
  Status DoReadRegisterValue(uint32_t offset, const char *reg_name,
                             uint32_t size, RegisterValue &value) override;

  Status DoWriteRegisterValue(uint32_t offset, const char *reg_name,
                              const RegisterValue &value) override;

  Status ReadGPR() override;

  Status WriteGPR() override;

  Status ReadFPR() override;

  Status WriteFPR() override;

  Status ReadTLS();

  void *GetGPRBuffer() override { return &m_gpr_arm; }

  void *GetFPRBuffer() override { return &m_fpr; }

  size_t GetFPRSize() override { return sizeof(m_fpr); }

  void *GetTLSBuffer() { return &m_tls; }

  size_t GetTLSSize() { return sizeof(m_tls); }

private:
  uint32_t m_gpr_arm[k_num_gpr_registers_arm];
  RegisterInfoPOSIX_arm::FPU m_fpr;
  RegisterInfoPOSIX_arm::TLS m_tls;

  bool m_refresh_hwdebug_info;

  bool IsGPR(unsigned reg) const;

  bool IsFPR(unsigned reg) const;

  bool IsTLS(unsigned reg) const;

  llvm::Error ReadHardwareDebugInfo() override;

  llvm::Error WriteHardwareDebugRegs(DREGType hwbType) override;
#ifdef __arm__
  llvm::Error WriteHardwareDebugReg(DREGType hwbType, int hwb_index);
#endif

  uint32_t CalculateFprOffset(const RegisterInfo *reg_info) const;

  RegisterInfoPOSIX_arm &GetRegisterInfo() const;
};

} // namespace process_linux
} // namespace lldb_private

#endif // #ifndef lldb_NativeRegisterContextLinux_arm_h

#endif // defined(__arm__) || defined(__arm64__) || defined(__aarch64__)